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ID 25952
本文ファイル
著者
Goto, Ikue
Kawaguchi, Osamu
Minagawa, Kazuaki
Ariyoshi, Eiji
Matsuda, Osamu
キーワード
Benthic microalgae
Hiroshima Bay
Nitzschia
Remediation
Sediment
NDC
建設工学・土木工学
抄録(英)
We examined whether replantation of benthic microalgae (BMA) can remediate shallow organically enriched sediment. Nitzschia sp., the dominant species in the tested area (Hiroshima Bay, Japan), was isolated and mass cultured, then replanted in the same area. Changes in the condition of the sediment were monitored for five months. During the study period, we observed an increase in redox potential (ORP) and a decrease in acid-volatile sulfide (AVS) in the experimental area, indicating that the sediment condition changed from reduced to oxic. Organic matter in the sediment, represented by chemical oxygen demand (COD), ignition loss (IL) and organic nitrogen (ON), decreased significantly, while inorganic nutrients (ammonia and phosphate) increased in the interstitial water. These changes imply that oxygen produced by the replanted BMA may have enhanced aerobic bacterial activity, accelerating the decomposition of organic matter. Thus, replantation of BMA shows potential as a novel and promising "phytoremediation" method for organically enriched sediment.
掲載誌名
Marine Pollution Bulletin
57巻
1-5号
開始ページ
108
終了ページ
115
出版年月日
2008
出版者
Pergamon
Elsevier Science Ltd.
ISSN
0025-326X
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
author
権利情報
Copyright (c) 2007 Elsevier Ltd
関連情報URL
部局名
生物圏科学研究科